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could anyone elaborate on how these boxes (in general) work. how they differ from actual ecu tunes?
aside from the 'box manufacturers claims, are there any substantiated back-up to the claims? ie dynos/professional?
do not mean to come off as cynical, but i don't believe there is gain without at least some pain. the "pain" as it were doesn't need to break the deal, but i have a hard time believing a 286 to 368 hp gain for $500 with absolutely no downside! am i being goofy?
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